[mikegett]

It depends on what you are looking for in the Head unit. If you want sound quality with exceptional flexability in tailoring your sound, then look into the eclipse. If you want a in dash dvd system them look toward the Kenwood. As far as sound goes, the eclipse will be one of the best Head Units you can place into the car. While no manufacturer makes the perfect Head Unit, eclipse has consistantly been known for extremely accurate sounding reproductions. The eight volt consits of a 24 bit DAC that utiliizes a digital signal from cd to pre-out. A very extensive array of graphic and even 3 parametric eq's on board. The DSP in the head unit is a real DSP unlike most manufactures that market a simple bass, treble, and mid section presetts as a Digital Signal Processor. The memory stick's primary function is to allow the user to take a sound analysis (with on board mic) and upload it to the eclipse website. There, the website will tailor your eq to the cars accoustics. If you are interested in a in dash dvd system with exceptional sound reproduction then look toward the eclipse double din with internal 5.1 processing. It contains the same dual processor, 24 bit DAC and eq as the 8 volt. It retails for 1600. If you want to go all out then look into there premiere double din that contains a 20 gig hard drive as well. As for me, I am torn between buying the double din with 5.1 (as seen in my sig) and the 8454. Due to cost and installation difficulties, the 8454 will probably be my next purchase.